At the beginning of 2012, I created a Facebook page called "Economics in One Meme." It went dormant for most of the Fall because the meme creator I was using (Quickmeme) got banned from Reddit and then changed its format pretty considerably. After dragging my feet (and after getting through the semester) I created an Imgur account and started making memes again. Sadly (?), I'm not alone: EconomicsMemes.com also offers an array of econ-related memes.
Here's my most recent contribution. Mises and Hayek are meta-hip: while everyone else thought socialism was the wave of the future, they knew the real story.